4
INSTALLATION
Remove pump from carton and attach to cover,
bung tting or other mounting.
Blow out any foreign material from the air supply
line before connecting to pump. An air line lter/
regulator is recommended for all applications;
wet and dirty air will shorten the life of the pump.
For severe duty applications, an air line lubricator
is recommended for better performance and
longer pump life. Use 10 to 20 weight lubricant
and set for 1 drop every 2 minutes of use.
Be sure air supply is off before connecting to
pump. Gradually open air regulator valve until
pump begins to cycle. The pump should prime
within 1 to 3 minutes. Pump a small amount of
uid at low air pressure to remove trapped air
and foreign materials from lines. Discard this
waste material.
Consult with local and state authorities to
determine proper disposal of waste material.
After the pump system is fully primed, open air
supply valve until desired ow and/or pressure
is obtained. Always use the lowest pressure
needed to obtain the desired results. This
reduces pump wear.
TROUBLESHOOTING
Read all instructions carefully before servicing.
If pump does not operate properly, check the
following points carefully (before making any
adjustments or repairs) to determine which part
of the installation is at fault.
I. (a) Is pump getting an adequate supply of air?
Connect air gauge to coupler. Pumps should
develop grease pressure approximately 50
times the air pressure used. Most practical
grease pressure is developed by 150 pounds
of air pressure.
(b) Check air coupler to pump to make sure
it is connected securely.
II. Check grease drum to make sure pump tube
is submerged in lubricant. Change drum
if necessary.
III. Check grease line for leaks in hose, swivels,
connectors, control handle, and pipe line.
Pump will operate continuously to replace
leaking grease.
After preceding points have been checked,,
proceed as follows with the case or cases which
appear to meet your situation.
CASE 1: Pump not operating at all (air valve
(38) not tripping over) or air blowing constantly
from air valve.
A. Toggle of air valve assembly may be rubbing
against tripper rod (6) and the friction is
preventing it from tripping. In some cases,
it may only be rubbing a little and when the
pump is running free, the toggle is moving
fast enough to overcome friction, but when
the pump builds up pressure and slows down,
the toggle will stick. Remove air valve by
unscrewing two cover screws (19) and six
clamp screws (17). Carfully pry the toggle
away from the pump body with screwdriver.
B. The six screws (17) holding the air valve
assembly to the casting may be loose;
tighten them securely. In most cases, the air
valve assembly will operate if these screws
are loose, but it will be sluggish and air will
probably leak. The same thing will happen if
gasket (14) between the air valve assembly
and the pump casting is damaged or worn.
C. If air valve assembly (15) still will not
operate, it will be necessary to replace it.
Replacement is very simple and the cost is
reasonable. Parts for the air valve are not
sold individually.
CASE 2: Hose pulsating with absence of grease
under pressure. This is an indication that the
primer valve (43) or ball (34) are not seating
properly. Also Check ball outlet assembly at
point of hose attachment as ball (47) may not
be seating properly.
A. To clean ball seat and piston adapter,
proceed as follows: Unscrew screen (4430-
001) at lower end of tube with pipe wrench, if
applicable, grasping same at extreme lower
end. Loosen primer cylinder (44) with pipe
wrench but do not remove. Line up slots
in primer cylinder with small hole (3/16”)
